Activity
From 07/14/2013 to 08/12/2013
08/12/2013
- 07:12 PM Software Development: RE: DSP connection to FPGA cores
- Should I assume that, since I have not had a reply to my last message, my comments in that message are correct?
08/11/2013
- 10:03 PM Software Development: RE: DSP connection to FPGA cores
- Thanks for a very quick reply. So if I read or write from 0x66xxxxxx I will generate CS5 and if I read/write from 0x...
- 07:17 PM Software Development: RE: DSP connection to FPGA cores
- I don't understand what you mean by "I can't use memory mapping as this is only useful for the ARM processor.".
Th... - For previous history, see the various messages and replies in "Simple Example Needed" below. I was able to get a cus...
08/09/2013
- 09:18 AM Software Development: RE: RTC issue?
- Hi Kevin,
Would you be willing (offline) to share your schematics so that we might take a peek?
It's not obviou...
08/06/2013
- 11:15 AM Software Development: RE: Watchdog
- Yes,
You'd want to compile the davinci watchdog kernel module. - Is there a watchdog timer implemented in the MityDSP configuration anywhere that would restart Linux should the syste...
- 07:21 AM FPGA Development: RE: Programming FPGA on power up issues
- I have done 2 way CPU,Linux and u-Boot. But result is the same.
- 07:15 AM FPGA Development: RE: Programming FPGA on power up issues
- How are you loading via CPU, linux or via u-Boot?
- Hi,
I am using MityDSP-L138F(LX16 FPGA) and Carrier Board.
I developed new FPGA system that included only Upp Inter...
08/05/2013
- 11:32 AM Software Development: RE: RTC issue?
- I've check with the HW designer and he thinks it should be OK, see his info below
"The 3V_RTC pin of the L138 Modu... - 11:08 AM Software Development: RE: RTC issue?
- Have you measured the Battery Backup voltage on your board through a power cycle? If the backup voltage drops below ...
- Hi,
We are seeing an issue with the L138 RTC not running on our custom board - using hwclock we never see the time... - 06:18 AM Software Development: RE: Calculating FFT using SigProcTIDspSupport in SigProc library
- Hello,
It was the cause-thank you very much.It works. Curious enough, I now realised that the corrected implementati...
08/04/2013
- 02:52 PM Software Development: RE: Calculating FFT using SigProcTIDspSupport in SigProc library
- I think your problem is here:
for(int i=0;i!=FFT_SIZE;i+=2)
{
mpWorkBuff[i]=sin21[i];
mpW... - Hello,
I am trying to compute the FFT from 2 signals at once. So far I managed to compute the FFTs of my signals bas...
08/03/2013
- 03:47 PM Software Development: RE: DSP EDMA IRAM DATA TRANSFER
- Hello again,
Is there any way to set a variable to be stored in specific address ? Using the EDMA I have transferred...
08/02/2013
- 04:31 PM Software Development: RE: DSP EDMA IRAM DATA TRANSFER
- Hello,
I added the line with _HWI_eventMap(anHWInterruptLevel, globalConfig[Edma3InstanceId].xferCompleteInt)_ in Ds... - 09:50 AM Software Development: RE: DSP EDMA IRAM DATA TRANSFER
- Heads up. Make sure that you configure the Event Mapper for the quick DMA transfer complete status to the DSP proper...
- 10:57 AM Software Development: RE: Problems with custom board
- Mary,
AUFS is a filesystem. It isn't a problem. Your .config file matches ours so doesn't appear to be the issue... - 10:54 AM Software Development: RE: Problems with custom board
- The two baseboard entries don't sound like a problem:...
- 10:40 AM Software Development: RE: Problems with custom board
- ...
- 10:07 AM Software Development: RE: Problems with custom board
- Thanks for the reply. We fixed the ethernet problem with a pullup on MII_RXD0, as was done on the industrial io boar...
- 09:52 AM Software Development: RE: Problems with custom board
- You may not have the proper configuration options set for the Power Management and Voltage Regulators set in the kern...
- 09:14 AM Software Development: RE: Problems with custom board
- According to your bootlog the following errors would cause the cpufreq directory to be missing as cvdd is needed.
...
08/01/2013
- I built a new kernel based on MDK_2012-08-10 starting with baseboard-industrialio.c and making a new baseboard file f...
07/31/2013
- 02:34 PM Software Development: RE: mtd->read (...) returned ECC error
- Christian,
It is helpful for us if you create a new post so that we see it otherwise your might be missed. If you... - 11:37 AM Software Development: RE: DSP EDMA IRAM DATA TRANSFER
- Hello,
In fact I did not and it was the cause. When I invoked the method, EDMA started to transfer data properly ! T... - 10:26 AM Software Development: RE: DSP EDMA IRAM DATA TRANSFER
- Hi,
You need to make sure that you call tcDspQDMA::Initialize() with a free hardware level (try 7). Did you make ...
07/29/2013
- Hello,
I am currently programming the DSP of MitydspL138 Industrial IO Board using the DSP/BIOS. I am trying to tran... - 09:41 AM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- Hello again,
It works ! Invoking EventMap with an appropriate second argument solved the problem:
HWI_eventMap(6, 6... - 08:43 AM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- For the DSP Event Map (item number 1), refer to table 3-1 of the TRM in section 3.2.2.1.
GPIO Bank zero event appe... - 08:02 AM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- A little corrction in what I have written in my previous mail- for bank 0 offset 0 (J701 pin 25) the function call sh...
- 07:43 AM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- Hello again,
First of all,thank you for your quick reply.
I am trying to implement the solution focusing on your ...
07/28/2013
- 08:19 PM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- Hi,
So currently the DspGpio.cpp implementation (for non-FPGA GPIO's) for the 674X core is does not implement inte... - Hello,
I am currently programming the DSP using the DSP/BIOS . The problem I have is how to configure HWI in J701 p...
07/26/2013
- 11:33 AM Software Development: RE: Kernel bug
- Hi Mostafa,
Thank you for the notice.
I see that is in the master branch (2.6.34). We will correct it. Howeve... - Hi, just wanted to make you aware of a bug in the kernel sources:
http://support.criticallink.com/gitweb/?p=linux-...
07/24/2013
- 06:13 PM Software Development: RE: UPP "start" signal ignored in receive mode?
- Hi Stu,
Have you tried to use chipscope to confirm the alignment of the start strobe with the data as sent by the ... - 12:53 PM Software Development: RE: UPP "start" signal ignored in receive mode?
- Scott,
Yes, we're trying to send one line (of 6176 bytes) per DMA memory buffer (also 6176 bytes). The "DspUpp.c"...
07/23/2013
- 05:52 PM Software Development: RE: UPP "start" signal ignored in receive mode?
- Hi Stu,
Check section 33.2.5.3 of the TRM. For receive mode, the start line is optional, controlled by the STARTx... - 04:56 PM Software Development: RE: UPP "start" signal ignored in receive mode?
- Stu,
I'm not sure about the DSP driver for uPP, I am using a Linux driver to the Arm. Are you trying to stream data...
07/22/2013
- 03:52 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Hi Mike, relevant definitions from the header:...
- 02:11 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Just for sanity,
Have you confirmed you are writing to the correct AEMIF registers? CE3 is the NAND, and you are ... - 01:42 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Hi Mike,
I've now also tried setting unused I/O to float and increasing both the TA and Read Hold to 4 cycles. I'v... - We have an FPGA application for the MityDSP-138F board which transmits "packets" to the DSP through the UPP port. Th...
- 01:25 AM Software Development: RE: Fail to mount Root FS from MicroSD card
- Ok, managed to fix the problem.
I have changed mityomapl138_mmc_get_ro() in board-mityomapl138.c to return(0) since ...
07/21/2013
- 10:19 PM Software Development: RE: Fail to mount Root FS from MicroSD card
- Hello, Tim!
Comma makes no difference, I have tried.
I have got a little progress - I have changed bootargs as ... - 07:27 AM Software Development: RE: Fail to mount Root FS from MicroSD card
- Dmitry,
I believe yhou are missing a comma in your bootargs..
root=/dev/mmcblk0p1 rw rootwait
should be
root=/dev... - Hello!
I am trying to mount Root FS from MicroSD card (ext2 formated).
Boot process fails with kernel panic.
My ...
07/18/2013
- 06:50 PM Software Development: RE: RS-485 problems
- Solved the problem myself - it turns out that either SER_RS485_RTS_ON_SEND or SER_RS485_RTS_AFTER_SEND must be define...
- 05:54 PM Software Development: RE: RS-485 problems
- OK, then it all makes sense. In spite of the way the connector is shown in the documentation I was assuming (never a...
- 05:20 PM Software Development: RE: RS-485 problems
- Actually, I take that back. The pin out is illustrated in Figure 2 of the specification....
-Mike
- 05:13 PM Software Development: RE: RS-485 problems
- Ah,
I think I may see the problem. Those connectors are pinned (on our PCB) for use with a ribbon cable and a DB-... - 05:08 PM Software Development: RE: RS-485 problems
- My board is 80-000268RI-2B, S/N 132541. I looked at the appropriate document on the page you referenced, and while i...
- 04:59 PM Software Development: RE: RS-485 problems
- Hi Steven,
Let's make sure you are referencing the correct revision information for the board (it has been updated... - 04:07 PM Software Development: RE: RS-485 problems
I am looking at pins on J504, based on the Industrial IO Board rev C documentation
Curiously, only pins 1,2,3,4,...- 03:27 PM Software Development: RE: RS-485 problems
- OK, here is what I see:
mitydsp@mitydsp-VirtualBox:~/linux-davinci$ git branch
master
* mitydsp-linux-v3.2
mi... - 03:24 PM Software Development: RE: RS-485 problems
- I am assuming it compiled OK.
Are you sure that the write() call is returning successfully? Can you send the full... - 03:22 PM Software Development: RE: RS-485 problems
- Btw press q to escape @git log@.
- 03:21 PM Software Development: RE: RS-485 problems
- Steven,
Run the command @git branch@ to see which branch is selected. It should say mitydsp-linux-v3.2. When you... - 03:18 PM Software Development: RE: RS-485 problems
- OK, I built the new kernel and flashed it to the MityDSP - now uname gives:
Linux mityomapl138 3.2.0+ #1 PREEMPT T... - 02:43 PM Software Development: RE: RS-485 problems
- Sorry - my mistake. I re-installed the toolchain and then realized that I had typed "CROSS-COMPILE" instead of "CROS...
- 02:06 PM Software Development: RE: RS-485 problems
- I seem to have the same problems - here is the output from a new shell:...
- 01:52 PM Software Development: RE: RS-485 problems
- You only use the HOST native CC, not the cross tools, to build the config file. It seems like you have a CC environm...
- 01:41 PM Software Development: RE: RS-485 problems
- I'm getting errors when I try to build the kernel:
mitydsp@mitydsp-VirtualBox:~/linux-davinci$ make ARCH=arm CROSS... - 11:26 AM Software Development: RE: RS-485 problems
- If you have our repository cloned already.......
- 11:14 AM Software Development: RE: RS-485 problems
- A newbie question - How do I build this particular branch of the kernel?
- 10:34 AM Software Development: RE: RS-485 problems
- Thanks for your response. Here is what I get from uname:
Linux mityomapl138 3.2.0 #1 PREEMPT Wed May 15 09:16:03 ED... - 12:30 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- One thought:
Is it possible the tri-state drive logic for the data lines off the FPGA is creating bus contention? ... - 12:24 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Hi Mike,
Thanks for the suggestions.
Not sure I understand what you mean by FPGA access bandwidth. It is being ...
07/17/2013
- 09:17 PM Software Development: RE: RS-485 problems
- OK. I have added the patch to the mitydsp-linux-v3.2 branch. You should be able to at least see the Tx line toggle ...
- 08:55 PM Software Development: RE: RS-485 problems
- Hi Steven,
Sorry for the confusion. It's not a menuconfig item. There is a patch needed to enable the UART2 pin... - 08:32 PM Software Development: RE: RS-485 problems
- How would anyone know this? I have looked at the config of the kernel I am using and you are correct, these pins are...
- 07:05 PM Software Development: RE: RS-485 problems
- Hello,
Is is possible your kernel may not be setting up the ARM pin multiplexing for UART2? In your baseboard file... - 06:48 PM Software Development: RE: RS-485 problems
- I have attached the files defining the class and showing how I open the serial port. Then I just use standard write c...
- I am trying to get the RS-485 running on my Industrial I/O board with the L-138F. I'm using the example code in "sen...
- 07:38 AM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Hello,
How much bandwidth are you using for the FPGA accesses? Have you looked with any sort of bus analyzer (per...
07/16/2013
- We have a project which uses CS4 and CS5 to write and read data from a pair of FPGA FIFOs respectively. CS4 is used e...
07/15/2013
- 05:23 PM Software Development: RE: Simple example needed
- Thanks for the help. I decided to take a very simple approach and use mmap to access the FPGA, based on the mmap exa...
07/14/2013
- 08:22 AM Software Development: RE: Simple example needed
- Answers to questions:
1. The reserved FPGA id's are in the file: $MDK/sw/common/fpga/core_ids.h. I would use core...
Also available in: Atom
Go to top
